Siemens DP/AS-Interface Link 20E, Руководство пользователя

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Using the Command Interface
85
DP/AS-Interface Link 20E
Release 11/2002
C79000-G8976-C138–04
3.3.4 Read_Parameter
Purpose
This call returns the current parameter value (actual parameter) of an AS-i slave
sent by the DP/AS-i Link 20E.
This value must not be confused with the parameter echo that is supplied by the
AS-i slave as a response to the write_parameter job.
Structure of the Job Data in the Send Buffer
Byte Meaning
0 Command number: 03
H
1 Slave address
Structure of the Response Data in the Receive Buffer
Byte Meaning
Bit 7 Bit 4 Bit 3 Bit 0
0 reserved Parameter